flat head screw specifications

In the standard specifications, when the countersunk flat head screw specifications are not specified in the diameter of the screw and the angle of the head, we cannot find out what the specific size is.

Many customers are sending us an inquiry, returning the flat head screw specifications, saying that the thread diameter is M3 (or other size) and the length is 12mm (this length is generally referred to in the countersunk screw). The full length of the screw), other sizes are quoted according to our standards.

In fact, there is no standard size in the flat head screw specifications. Because the customer did not give the angle of the countersunk head. The angle of the countersunk head is different, and the diameter and thickness of the head are also different. It is possible that when we give the customer a 90° countersunk head, let the customer confirm that the size is OK.

Last week, a lady from Shanghai called us to say that they wanted a M2.5 countersunk head screw, but she didn’t know what the angle of the countersunk head was. Later, we asked Ms. Yang to send 2D or 3D drawings. After measuring the assembly position of the product, we found that the head angle of the countersunk screw was 82° to fully tighten the product.

When you are not sure about the countersunk flat head screw specifications, you can send the sample to our factory. Shenzhen Shi shi tong can determine the specifications you want according to your products. Feel free to contact us at annie.li@szsst88.com